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What is a segmentation fault?
...n (process) memory in improper way (for instance trying to write to non-writable space). But the most common reason for it is the access to the part of the virtual address space that is not mapped to physical one at all.
And all of this with respect to virtual memory systems.
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Why does Math.Round(2.5) return 2 instead of 3?
...5,MidpointRounding.AwayFromZero)" becoming 3).
The following diagram and table may help:
-3 -2 -1 0 1 2 3
+--|------+---------+----|----+--|------+----|----+-------|-+
a b c d e
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When should you not use virtual destructors?
...mean every allocated object increases in memory cost by a virtual function table pointer.
So if your program involves allocating a very large number of some object, it would be worth avoiding all virtual functions in order to save the additional 32 bits per object.
In all other cases, you will sav...
Difference between Pig and Hive? Why have both? [closed]
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Hive was designed to appeal to a community comfortable with SQL. Its philosophy was that we don't need yet another scripting language. Hive supports map and reduce transform scripts in the language of the user's choice (which can be embedded within SQL clauses). It is widel...
In PHP what does it mean by a function being binary-safe?
...on. See: PHP strings
0x00 = NULL
0x04 = EOT (End of transmission)
ASCII table to see ASCII char list
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Explicitly set Id with Doctrine when using “AUTO” strategy
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In case the entity is part of a class table inheritance you need to change the id-generator in the class metadata for both entities (the entity you are persisting and the root entity)
sha...
What is the difference between BIT and TINYINT in MySQL?
...thing on linux, I had problems with queries that inserted or selected from tables that had BIT DATA TYPE.
Bit is not safe for now.
I changed to tinyint(1) and worked perfectly. I mean that you only need a value to diferentiate if it's 1 or 0 and tinyint(1) it's ok for that
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What exactly does a jar file contain?
...by the application.
Class files contain compiled Java code, which is executable by the Java Virtual Machine.
http://en.wikipedia.org/wiki/Java_class_file
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What's the difference between JPA and Spring Data JPA?
...ager, and annotations that help you map a Java entity object to a database table.
There are several JPA providers, like HIbernate, EclipseLink, or Open JPA which you can use.
Spring Data JPA
Spring Data JPA is a JPA data access abstraction. Just like JPA, Spring Data JPA cannot work without a JPA...
Creating multiline strings in JavaScript
... in IE11, Firefox 31, Chrome 35, or Safari 7. See kangax.github.io/compat-table/es6
– EricP
May 24 '14 at 2:41
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